Ohio Rev. Code § 4901.22: Power of commissioners to administer oaths.

Each of the public utilities commissioners, for the purposes mentioned in Chapters 4901., 4903., 4905., 4907., 4909., 4921., 4923., and 4927. of the Revised Code, may administer oaths, certify to official acts, issue subpoenas, and compel the attendance of witnesses and the production of papers, waybills, books, accounts, documents, and testimony.